User Guide for Schneider Electric ULP System

Quick guide from the manual

The ULP (Universal Logic Plug) system is designed to integrate metering, communication, and operating assistance functions for Schneider Electric circuit breakers. An Intelligent Modular Unit (IMU) consists of a main device (circuit breaker or switch) with an internal communication module and one or more external ULP modules. This guide provides the necessary rules for composition, connection, power supply, and network architecture design.

ULP System Overview

The ULP system enhances the functionality of PowerPacT and MasterPacT circuit breakers. Key components include:

• IFE Ethernet Interfaces: Provide Ethernet access for remote monitoring.
• IFM Modbus-SL Interfaces: Provide Modbus serial line access.
• IO Modules: Offer digital inputs/outputs for cradle management and custom applications.
• FDM121 Display: Provides local display of measurements and alarms.
• UTA Tester: Used for setup, testing, and maintenance.

Connection and Power Supply Rules

Proper installation is critical for system integrity:

• Daisy-Chaining: ULP modules are connected in a daisy chain using RJ45 ULP cords.
• Line Termination: A ULP line termination (TRV00880) must be installed on the unused RJ45 port at the end of the ULP line.
• Cable Lengths: Maximum length between two ULP modules is 5 m (without external power) or 10 m (with external power). Total length per IMU is 20 m.
• Power Supply: The system requires a 24 Vdc SELV power supply. Load balance must be calculated based on the consumption of all connected ULP modules.
• Earthing: Ensure proper protective and functional grounding of the enclosure and DIN rails.

Communication Network Setup

The system supports both Modbus-SL and Ethernet networks:

• Modbus-SL: Requires specific wiring for D0, D1, and 0 VL signals. Use Modbus line termination at both ends of the network.
• Ethernet: Uses Category 5e or 6 SFTP cables. No maximum number of devices per network, but transmission rates are 10-100 Mbps.

System Architectures

The ULP system can be configured in several ways:

• Standalone: No communication interface.
• Centralized Modbus: IFE servers and IFM interfaces are grouped in islands.
• Distributed Modbus: IFM interfaces are distributed near the ULP modules.
• Ethernet Architectures: Supports both star and daisy-chain topologies for high dependability or competitive cost.

Technical Characteristics

The system operates within specific environmental and electrical limits. Always verify firmware and hardware compatibility using the EcoStruxure Power Commission software. Refer to the appendices for detailed part numbers and technical specifications of all ULP components.